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Oct. 6 1925- E. R. -KRUEGER HAIR CLIPPER Filed 001:. 14, 1920 2016? E/feme 2' imy,

Patented Oct. 6, 1925.

UNITED STATES PATENT; omen ELMER R. KRUEGER, OF CLEVELAND, OHIO, ASSIGNOR TO THE P. A. GEIER COMPANY,

OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

HAIR CLIPPER.

Application filed October 14, 1920. Serial No. 416,957.

To all whom it may concern:

Be it known that I, ELMER R. Knnneniz.

a citizen of the United States of America, re-

siding at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Hair Clippers, of which the following is a specification.

My invention relates to improvements in hair clippers and is herein disclosed as embodied in power-actuated clippers especially designed and. adapted for use in barbers" and hair dressers shops. The object of my invention. is to simplify and reduce the parts of this ciass of appliances, while providing a novel yielding adjustment for the clipper blades and light, eflicient actuating means for the reciprocated member.

It is desirable in this class of appliances to make the reciproeated parts very simple and of light weight. Also, it is of advantage to construct an integral casing and obtain access tothe movable parts from beneath the clipper, while the adjustment of the tension, almost of necessity, must be provided at the top of the casing or clipper frame. Moreover, this adjustment must be one that is capable of immediately adapting the appliance for cutting either the fine hair of a child or the beard of an adult.

Having these prime requirements in mind, I have provided in my improved hair clipper, herein shown and described, the necessary means for meeting these requirements and for simplifying the manufacture of such appliances; all of which may be made more apparent by referring to the accompanying drawings wherein:

Fig. 1 is a plan view in full size of a hair clipper embodying my invention.

Fig. 2 is a vertical section thereof, but double the scale, on line 2--2, Fig. 1.

Fig. 8 is a plan view of the underside of the clipper, indicated by line 33, Fig. 2, with the bottom clipper removed to afford access to the contained parts.

Fig. 4 is a fragmentary view with the screw in section, illustrating the adjusting means, and

Fig. 5 separately shows the actuating block for the reciprocated clipper blade.

Throughout the several figures of the drawing I have employed the same character of reference to indicate similar parts.

The usual handle member a. is provided with bearings b, b; the former being tapped to receive the terminal nipple b of the actuating flexible shaft (not shown). A sectional wrist-pin shaft 0 has driving connection from the flexible shaft by which it is adapt ed to be rotated; the wrist-pin elying within a vertical slot cl out in the actuating block (Z, whereby it is reciprocated. This actuating block preferably is constructed by diagonally cutting a square, steel rod, which afiords a block triangular in cross section. and one very cheaply manufactured of accurate dimensions. Two pins are provided upon the botton'r face of the block for engaging the reciprocated clipper blade and actuating the same. It will be readily appreciated that the block d may be material- 1y reduced in weight by cutting it away at the ends and from above when desired, but I have preferred to show the block in its simplest form, and of double size, to indicate the sii'nplicity' and cheapness of manufacture.

The reciprocated or upper clipper blade is shown in operative position upon the block and with the parts assembled within the casing in Fig. For greater 0 012% pactness, this blade e is 'rearwardly slotted in line with the slot 05 in order to clear the wrist-pin c in its lower-most position. The bottom or stationary clipper blade f is adapted to be secured in place and retain the assemblage of the several parts by flush screws inserted in the tapped screw holes f.

Upon referring to Fig. 2, it will be seen that the block d engages the forward edge of the casing g which is integral with the handle and frame of the appliance. Thus the reciprocating clipper blade is reinforced throughout practically its entire length and thereby is held in operative relation with respect to the stationary clipper blade. In order to afford the necessarily firm, but

yielding, engagement between the teeth of the clipper blades, I have provided a simple adjustment, comprising screw-regulated springs and an interposed member or ball, as best shown in Figs. 2 and 4:.

A ball h is held within the cylindrical chamber it provided in the frame by upper and lower retaining rims. This ball rides freely on the beveled edge 71' of the wrist-' pin disk z and its yielding pressure is eb fected through the medium of the flat spring j, directly engaging the exposed upper portion of the ball, and the coiled spring is provided on the stem of the knurled adjusting screw Z. The parts are shown in the sectional View with a strong compression exerted upon the springs as required for clipping a beard or extremely wiry hair, but this spring pressure may immediately be regulated by the screw to suit the particular work in hand.

However, at all times an operative resilient pressure is exerted between the clipper blades which may be traced from the spring pressed ball through the disk '21. the block .-'I and the body of the blade 6. This pressure, thus diagonally applied, reacts against the over-extending, forward edge 9 of the casing, and constantly affords yielding engagement between the cutting edges of the clipper teeth. To some extent this close engagement between the forward portion of the block (Z and the edge of the casing serves to exclude dirt and bits of hair from the contained operative parts within the casing. These parts, nevertheless, are made very readily accessible by withdrawing the screws and removing the covering bottom blade f.

From the foregoing it will be understood that the hair clipper of my invention is constructed of relatively few and easily manufactured parts, while affording ready accessibility and adjustment for the operative parts.

Having now described my invention and improvement in its preferred and simpler form, I claim as new and desire to secure by Letters Patent, the following:

1. In a hair clipper the combination with a casing, of operative parts positioned therein and including a slotted actuating block (Z equilaterally triangular in cross section wedgingly engaged beneath the casing, tensioning means for said block and blade, a reciprocated clipper blade associated therewith, and its coacting stationary clipper blade, substantially as set forth.

2. In a hair clipper the combination with a casing, of a reciprocated blade positioned beneath the forward edge said casing, actuating means for the blade, an interposed wedging pressure member equilaterally triangular in cross section, an adjustable spring acting thereon and adapted yieldingly to hold the reciprocated blade beneath the edge of the casing and a coacting stationary clipper blade, substantially as set forth.

3. In a hair clipper the combination with a casing, of an actuating disk and wrist-pin rotatably mounted therein. a reciprocated clipper blade, connecting means for actuating the blade, a ball bearing upon said disk. a spring yieldingly engaging the ball, a screw adjustment for the spring adapted to regulate the pressure communicated to the reciprocated blade, a stationary abutment against which the spring pressure reacts, and a coacting stationary clipper blade, substantially as set forth.

4. In hair clipper the combination with a casing, of a reciprocated clipper blade, its slotted actuating block substantially triangular in cross section interposed between the forward edge of the casing and the blade, an actuating disk and wrist-pin associated with the block, a ball engaging said dish, a spring yieldingly engaging the ball, a screw adjust-- ment for the spring. and a stationary bottom clipper blade, substantially as set forth.

5. A resilient adjusting means comprising a rotated disk member, a ball engaging the edge of the disk, an adjusting screw. a spring, means for pplying the ad usted spring pressure through said ball to the disk, and its wedging member, said wedging membe-r, and an abutment against which it reacts, substantially as set forth.

In testimony whereof I do now a' liz; my

signature.

ELMER R. K

RUEG E R. 

